Lac Gérard-Tremblay is a Lake located in Blue Sea; La Vallée-de-la-Gatineau, Quebec.

• Latitude: 46° 12' 32'' North   (decimal: 46.2088889)
• Longitude: 76° 7' 41'' West   (decimal: -76.1280556)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Location: Blue Sea; La Vallée-de-la-Gatineau
• GPS Coordinate Locator Map: Lac Gérard-Tremblay Lat/Long